Coal-cutting and like machine



Sept. 8, 1936. J. B. MAVOR 2,053,727

COAL CUTTING AND LIKE MACHINE I File d May 12, 1936 2 Sheets-Sheet 1 FIG 1.

Sept. 8, 1936. J. B. MAVO R COAL CUTTING AND LIKE MACHINE Filed May 12, 1956 2 Sheets-Sheet 2 JZhwBrwMa-vor Patented Sept. 8, 1936 PATENT OFFICE COAL-CUTTING AND LIKE MACHINE John Bridle Mavor, Mile-End, Glasgow, Scotland, assignor to Mavor and Coulson, Limited, Glasgow. Scotland Application May 12, 1936, Serial No. 79,388 In Great Britain October 16, 1934 9 Claims.

This invention refers to coal-cutting and like machines of the type in which the cutter-member provided, say a cutter-chain member, is capable of horizontal cutting and of shearing cutting vertically or at any oblique angle, the head of the machine, which is mounted on the body of the machine and from which the cutter-member extends, being turnable relative to the body about an axis which is stationary with respect to the body of the machine and which for reference will be called the longitudinal axis of the machine, and the cutter-member being sluable relative to the head about an axis which is transverse to the longitudinal axis, turning movement of the head and sluing movement of the cuttermember being performed by power operation from the motor of the machine, which is incorporated in the body.

Objects of this invention are to provide im- 20 prcvements relating to the transmission of power to the head for turning the head and for sluing the cutter-member by reducing multiplicity of parts in the region of the longitudinal axis and rendering the mechanism more readily-accessi- 25 ble; to provide improvements in the bearings by which the head is turnably carried by the body of the machine; and to provide for simple control of the various operations of which the machine is capable.

0 7 According to this invention, in a coal-cutting machine of the type above referred to in which power is transmitted by shaft and toothed-wheel gearing to the head for turning the head and sluing the cutter-member, the power transmission 35 mechanism comprises a reversible shaft, the transmission shaft, carried by the body of the machine and extending forward, parallel to the longitudinal axis, to the vicinity of the head, the axis of the shaft being external in a radial direction relative to the bearings by which the head is mounted on the body for turning, and two trains of gearing connectible selectively to the transmission shaft by means of clutch mechar nism, one for turning the head and the other for sluing the cutter-member.

In carrying the invention into effect, the head has a sleeve extending horizontally from it and the body has a bearing part over which said sleeve fits to carry the head turnably relative to the body about the longitudinal axis to a tooth-ed gear on the outside of which sleeve power is transmitted for turning the head, and, further, the clutch mechanism may be operable by a single hand-control member to change from turning of the head to sluing of the cutter-member or to a neutral condition. 7

In accordance with a further feature of the invention, power for driving the cutter-member is transmitted fromthe motor to the headby a shaft journalled in the body of the machine and extending along the longitudinal axis, and thence by shaft and toothed-wheel gearing separate from that forturning the head and sluing the cuttermember.

This invention is particularly applicable to coal-cutting machines of the tractor kind, the machine being, for instance, provided'with endless movable tracks which are driven by the motor. In one form of construction the motor of the machine is situated at a position which longitudinally'is between the head end and the back end of the machine, and with such an arrangement transmission'from the motor for turning the head and for sluing the cutter-member is by a shaft from the motor extending longitudinally rearwardly to gearing and from that gearing the transmission shaft extends forwardly to a position where the clutch control for operation of the head and cutter-member is provided.

An example of construction in accordance with this invention will now be described with reference to the accompanying drawings. in which:-

Figure 1 is a sectional plan, Figure 2 is a longitudinal sectional elevation, Figure 3 is a transverse section on the line XX of Figures 1 and 2, and Figure 4 is a transverse section on the line Y--Y of Figures 1 and 2, showing the head end, of a machine.

Figure 5 is a side elevation, partly in section, ,35 showing the machine.

In the drawings A isthe body of the machine,

B the turnablehead, and C the chain cuttermember. The head B is formed with a .sleeve extension D mounted on bearings at E for turning about the longitudinal axis F of the body A. The cutter-chain of the cutter member C is driven by a sprocket H, see Figures 2 and 5, which is rotatable with a shaft K journalled in the head B, and, for sluing, the cutter-member C is rotatable about theaxis of the shaft K.

In this example of construction, M is the transmission shaft extending forwardly from a gearing N at the back end of the machine, see Figure 5, to clutch mechanism at P at the head end. 9 The motor is enclosed in the body of the machine between the head end and the back end of the machine, and from it a shaft, also enclosed, extends rearwardly to the gearing N. The clutch -mechanism comprising a bevel wheel 2 and a;.

pinion 3, both rotatable relative to the shaft M, and a clutch 4 rotatable with the shaft M and movable endwise on the shaft M for engagement with the bevel 2 or the pinion 3.

For sluing, the clutch 4 is engaged with the pinion 3, the drive being, as follows:pinion 3, a pinion 5, a gear 6 rotatable about the longitudinal axis F, a bevel gear I rotatable with the gear 6, a bevel gear 8 in mesh with the gear 1, a worm 9 rotatable with the bevel gear 8, and a worm wheel l0 gearing with the worm 9, the worm wheel l0 being rotatable about the axis of the shaft K which is the transverse axis, the gear 8, worm 9 and worm wheel I!) being carried in the head B and the cutter-member C being r0- tatable with the worm wheel l0. Thus, rotation of the worm wheel 10 causes the sluing.

For turning the head B, the clutch 4 is engaged with the bevel 2, the drive being as follows:bevel 2, a bevel l2 in mesh with the bevel 2', see Figure 3, a worm l3 rotatable with the bevel l2, and a worm wheel l4 rotatable about the longitudinal axis F and gearing with the worm l3. The worm wheel I4 is rotatable with the sleeve extension D of the head B. The bearings at e for turning of the head B as shown may comprise tapered bushes l5 held in place endwise by a cover ring 16 and wear in the bearings can be taken up by inserting packing rings for causing the bushes l5 to be pushed farther home.

The drive for operating the cutter-chain is through a pinion l1 rotatable with a shaft l8 whose axis is the longitudinal axis F, a pinion l9 rotatable with the shaft l8, a pinion 20 in mesh with the pinion IS, a shaft 2| with which the pinion 20 is rotatable, a bevel gear 22 rotatable with the shaft 2| and a bevel gear 23 in mesh with the bevel gear 22 and with which the shaft K is rotatable, the shaft 2| with the pinion 20 and the bevel gear 23 being carried in the head B.

Figure 5 shows endless movable tracks R whereby the machine is propelled.

I claim:--

1. A coal-cutting machine having a body, a head mounted on the body, a cutter-member extending from the head, the head being turnable relative to the body about a longitudinal axis which is stationary with respect to the body and the cutter-member being sluable relative to the head about an axis which is transverse to the longitudinal axis, a motor incorporated in the body, and, for the transmission of power from the body to the head for turning the head and sluing the cutter-member, shaft and toothedwheel gearing comprising a reversible transmission shaft carried by the body and extending forward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to bearings by which the head is mounted on the body for turning, clutch mechanism, and two trains of gearing connectible selectively to the transmission shaft by means of the clutch mechanism, one for turning the head and the other for sluing the cutter-member.

2. A coal-cutting machine having a body, a

'head, a sleeve extending horizontally from the head, a bearing part of the body over which said sleeve fits to carry the head turnably relative to the body about a longitudinal axis, a cuttermember extending from the head and sluable relative thereto about an axis which is transverse to the longitudinal axis, a motor incorporated in the body, and, for the transmission of power from the body to the head for turning the head and sluing the cutter-member, shaft and toothed-wheel gearing comprising a reversible transmission shaft carried by the body and extending forward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to the head bearings, clutch mechanism, and two trains of gearing connectible selectively to the transmission shaft by means of the clutch mechanism, one for turning the head and the other for sluing the cutter-member.

3. A coal-cutting machine having a body, a head mounted on the body, a cutter-member extending from the head, the head being turnable relative to the body about a longitudinal axis which is stationary with respect to the body and the cutter-member being sluable relative to the head about an axis which is transverse to the longitudinal axis, a motor incorporated in the body, shaft and toothed-wheel gearing for the transmission of power from the body to the head for turning the head and sluing the cutter-member comprising a reversible transmission shaft carried by the body and extending forward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to bearings by which the head is mounted on the body for turning, clutch mechanism, and two trains of gearing connectible selectively to the transmission shaft by means of the clutch mechanism, one for turning the head and the other for sluing the cuttermember, and, for the transmission of power to the head for driving the cutter-member, a shaft journalled in the body and extending along the longitudinal axis, and shaft and toothed-wheel gearing driven from said shaft and separate from that for turning the head and sluing the cuttermember.

4. A coal-cutting machine having a body, a head, a sleeve extending horizontally from the head, a bearing part of the body over which said sleeve fits to carry the head turnably relative to the body about a longitudinal axis, a cutter-member extending from the head and sluable relative thereto about an axis which is transverse to the longitudinal axis, a motor incorporated in the body, shaft and toothed-wheel gearing for the transmission of power from the body to the head for turning the head and sluing the cutter-member comprising a reversible transmission shaft carried by the body and extending forward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to the head bearings, clutch mechanism, and two trains of gearing connectible selectively to the transmission shaft by means of the clutch mechanism, one for turning the head and the other for sluing the cuttermember, and, for the transmission of power to the head for driving the cutter-member, a shaft journalled in the body and extending along the longitudinal axis, and shaft and toothed-wheel gearing driven from said shaft and separate from that for turning the head and sluing the cuttermember.

5. A coal-cutting machine having a body, a head mounted on the body, a cutter-member extending from the head, the head being turnable relative to the body about a longitudinal axis which is stationary with respect to the body and the cutter-member being sluable relative to the head about an axis which is transverse to the longitudinal axis, a motor incorporated in the body, and, for the transmission of power from the body to the head for turning the head and sluing the cutter-member, shaft and toothedwheel gearing comprising a reversible transmission shaft carried by the body and extending for- Ward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to bearings by which the head is mounted on the body for turning, clutch mechanism operable by a single hand-control member, and two trains of gearing connectible selectively to the transmission shaft by means of the clutch mechanism, one for turning the head and the other for sluing the cuttermember.

6. A coal-cutting machine having a body, a head mounted on the body, a cutter-member extending from the head, the head being turnable relative to the body about a longitudinal axis which is stationary with respect to the body and the cutter-member being sluable relative to the head about an axis which is transverse to the longitudinal axis, a motor incorporated in the body, shaft and toothed-wheel gearing for the transmission of power from the body to the head for turning the head and sluing the cutter-member comprising a reversible transmission shaft carried by the body and extending forward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to bearings by which the head is mounted on the body for turning, clutch mechanism operable by a single hand-control member, and two trains of gearing connectible selectively to the transmission shaft by means of the clutch mechanism, one for turning the head and the other for sluing the cutter-member, and, for the transmission of power to the head for driving the cutter-member, a shaft journalled in the body and extending along the longitudinal axis, and shaft and toothed-wheel gearing driven from said shaft and separate from that for turning the head and sluing the cutter-member.

7. A coal-cutting machine having a body, a head, a sleeve extending horizontally from the head, a bearing part of the body over which said sleeve fits to carry the head turnably relative to the body about a longitudinal axis, a cutter-member extending from the head and sluable relative to the head about an axis which is transverse to the longitudinal axis, a motor incorporated in the body, and, for the transmission of power from the body to the head for turning the head and sluing the cutter-member, shaft and toothedwheel gearing comprising a reversible transmission shaft carried by the body and extending forward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to the head bearings, clutch mechanism, and two trains of gearing connectible selectively to the transmission shaft by means'of the clutch mechanism, one for turning the head and the other for sluing the cutter-member, the head turning gear train including a worm shaft driven from the transmission shaft and, on the outside of and fast with the head carrying sleeve, a worm wheel gear in mesh with the worm shaft.'

8. A coal-cutting machine having a body, a head mounted on the body, a cutter-member extending from the head, the head being turnable relative to the body about a longitudinal axis which is stationary with respect to the body and the cutter-member being sluable relative to the head about an axis which is transverse to the longitudinal axis, a motor incorporated in the body at a position which longitudinally is between the head end and the backend of the machine, and, for the transmission of power from the motor to the head for turning the head and sluing the cutter-member, shaft and toothed-wheel gearing comprising gears to the rear of the motor, a shaft extending longitudinally rearwardly from the motor to said gears, a reversible transmission shaft extending forward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to bearings by which the head is mounted on the body for turning, clutch mechanism, and two trains of gearing connectible selectively to the transmission shaft by means of the clutch mechanism, one for turning the head and the other for sluing the cutter-member.

9. A coal-cutting machine having a body, a head, a sleeve extending horizontally from the head, a bearing part of the body over which said sleeve fits to carry the head turnably relative to the body about a longitudinal axis, a cuttermember extending from the head and sluable relative to the head about an axis which is transverse to the longitudinal axis, a motor incorporated in the body at a position which longitudinally is between the head end and the back end of the machine, and, for the transmission of power from the motor to the head for turning the head and sluing the cutter-member, shaft and toothed-wheel gearing comprising gears to the rear of the motor, a shaft extending longitudinally rearwardly from the motor to said gears, a reversible transmission shaft extending forward parallel to the longitudinal axis to the vicinity of the head, the axis of the shaft being external in a radial direction relative to the head bearings, clutch mechanism, and two trains of gearing connectible selectively to the transmission shaft by means of the clutch mechanism, one for turning the head and the other for sluing the cuttermember.

JOHN BRIDIE MAVOR. 

